Worked on the MichaelCade/mcp-go repository to deliver OAuth-based authentication for the Server-Sent Events (SSE) client, focusing on enhancing security for real-time data streams. The work involved refactoring HTTP client options to support SSE-specific OAuth integration and developing new internal helpers to manage OAuth within the SSE transport layer. Updated the example SSE client to demonstrate the new OAuth flow, providing a practical reference for secure communication. Utilized Go for backend development, emphasizing API integration and security best practices. This feature lays the foundation for enterprise-grade authentication, addressing the need for robust, secure real-time data exchange in backend systems.